(Alpharma) These mesh wraps (two per package) work in conjunction with the Extend-A-Cool transdermal cooling system to provide up to six hours of cooling therapy. Use over the Extend-A-Cool Cooling Sheets to provide secure support against the horse's leg and to help maximize cooling power. Convenient and flexible, easy to use one-piece construction. Extend-A-Cool Mesh Wraps are reusable.